Apparatus and method of forming an anti-slip groove on roadway by using the non-cutting technology

ABSTRACT

Disclosed is an apparatus and a method capable of forming the anti-slip groove in a variety of shapes without cutting concrete or asphalt pavements unlike the conventional cutting technology, with making use of a non-cutting type of pressurizing rotator ( 130 ) under the condition of predetermined temperature and pressure being maintained in such a manner that the pressurizing rotator is mounted to a lower portion of a grooving vehicle. The forming plate ( 132 ) is integrally mounted to a radial outer surface of the main body ( 131 ) by welding. A plurality of peaks ( 135 ) are formed on a surface of the forming plate ( 132 ), the peaks ( 135 ) being corresponding with a shape of the anti-slip groove to be formed on roadway. Alternatively, a plurality of peaks can be directly formed on a radial outer surface of the main body ( 131 ).

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention is related to an apparatus and a method of forming an anti-slip groove on roadway by using the non-cutting technology, more particularly, to an apparatus and a method of forming an anti-slip groove on roadway, which are capable of basically solving problems associated with the conventional cutting technology such as cracks, dust particles and waste that may occur while forming the non-slip grooves on the roadway, which are capable of forming the anti-slip groove in a variety of shapes without cutting concrete or asphalt pavements unlike the conventional cutting technology, with making use of a non-cutting type of pressurizing rotator under the condition of predetermined temperature and pressure being maintained in such a manner that the pressurizing rotator is mounted to a lower portion of a grooving vehicle.

2. Description of the Prior Art

As a well known, a method of forming an anti-slip groove on roadway is for preventing a vehicle from being slipped on the roadway. That is, the grooving technique is a surface treatment method of road pavement and it is able to provide the anti-slip effect provided by a tire pattern with forming a three-dimensional groove a paved surface of the road. Accordingly, the grooving technique is capable of preventing the tire hydroplaning phenomenon from being occurred and of improving the water permeability. Also, the grooving technique is capable of preventing a vehicle from being slipped on the roadway by increasing the frictional force due to the existence of anti-slip groove. This technique helps in preventing the surface of the road from being frozen into ice and it can improve the running stability of the vehicle.

The directions of forming the three-dimensional groove are classified into two directions, a direction that is the same as the traveling direction of the vehicle and a direction that is perpendicular to the traveling direction of the vehicle. The method of forming the three-dimensional groove along the direction that is the same as the traveling direction of the vehicle is suitable for a curved section of the curved road. Alternatively, the method of forming the three-dimensional groove along the direction that is perpendicular to the traveling direction of the vehicle is suitable for the steep section or the crossroads of the road. The latter can shorten the braking distance of the vehicle and can prevent the hydroplaning phenomenon from being occurred and it may provide a drain.

According to the conventional method of forming the three-dimensional groove, a grooving machine in which a driving means is mounted may be used for forming the anti-slip groove on roadway. This grooving machine includes a drum-type rotator having a plurality of cutting blades at a rear of the main body thereof. In detail, under the state that the grooving machine is located on the roadway, the drum-type rotator will have reached a desired position by adjusting a steering device of the grooving machine while the grooving machine is for driving. Then, the drum-type rotator having the cutting blades descends toward the road and thereafter begins to be rotated in order to form the anti-slip groove.

FIG. 5 shows a conventional apparatus of forming an anti-slip groove on the roadway according to the prior art.

Referring to FIG. 5, the apparatus of forming an anti-slip groove according to the prior art, generally designated as 10, is shown mounted to a trailer frame (12). The trailer frame (12) is supported on sets of rear wheels (14) and front wheels (not shown) for pulling by a prime mover such as a tractor truck (not shown) or the like over the asphaltic surface (15) to be treated. The trailer (12) includes a gas-fired combustion device (16) for heating the asphaltic pavement to be treated and a gas storage tank (18) for storing a fuel supply for the combustion device (16). The trailer frame (12) also has a scarifying tool (20) mounted at the end of the trailer frame (12) ahead of the apparatus (10). The apparatus (10) comprises a plurality of disc-like members or cutter discs (32) freely rotatably mounted at laterally spaced intervals to a support carriage (34) for cutting up and windrowing the asphalt material.

In the apparatus (10) of forming an anti-slip groove according to the prior art as described above, the trailer frame (12) is moved by the vehicle on the asphaltic surface to be treated. At this time, the apparatus preheats the asphaltic surface by using the combustion device (16) and then the disc-like members or cutter discs (32) descend and they are contacted with the asphaltic surface. Thereafter, the disc-like members or cutter discs (32) cut the asphaltic surface in order to from a desired anti-slip groove.

One drawback of this conventional apparatus of forming the anti-slip groove on the roadway by using a plurality of cutter discs is that a crack may be occurred on a paved road and thereby resulting in the generation of surface damage. Another drawback of the conventional apparatus is that wastes can be generated by the cutting operation of the road surface and thereby resulting in the generation of environmental pollution. This operation is cumbersome because a worker must clean up the road in order to collect wastes caused by cutting part of the pavement.

A variety of endeavors for solving the above problems have been proposed. One approach is, a method of construction the anti-slip groove on the road surface and an apparatus thereof have been proposed on Korean Patent No. 10-0697948 issued to S. I. LEE, etc. on Mar. 13, 20007. This invention relates to a technique of forming the anti-slip groove by pressing the road surface with a groove machine. This apparatus should use a heater for preheating a paved road, an electromagnetic generator, elements for heating a hardener, etc. Also, this apparatus should use a hydraulic device for supporting the rotary drum (52) and for moving it up/down. Consequently, there are problems that the mechanical configuration is complicated and the construction work is relatively complex and inconvenient. Thereby it has poor productivity.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to The present invention has been made with a view to overcoming the foregoing problems of the prior art.

An object of the invention is to create eco-friendly apparatus and method of forming an anti-slip groove on roadway by using the non-cutting technology, which are capable of basically solving problems associated with the conventional cutting technology such as cracks, dust particles and waste that may occur while forming the non-slip grooves on the roadway, which are capable of forming the anti-slip groove in a variety of shapes without cutting concrete or asphalt pavements unlike the conventional cutting technology, with making use of a non-cutting type of pressurizing rotator.

Another object of the invention is to create an apparatus and a method of forming an anti-slip groove on roadway by using the non-cutting technology, which are capable of forming the anti-slip groove on the roadway by only pressing the paved surface of the road without pre-heating the paved surface of the road, which are economically feasible and make possible to increase work efficiency due to the relatively simple structure, and which are capable of fundamentally preventing noise or dust from being generated while working with this grooving apparatus.

In order to achieve these objects as described above, according to a first aspect of the present invention, the present invention provides an apparatus of forming an anti-slip groove on roadway by using the non-cutting technology, the apparatus comprising:

a drum-shaped pressurizing rotator being mounted to a lower portion of a vehicle and being supported by a supporting arm vertically extending from a main body of the vehicle, and the pressurizing rotator including a drum-shaped main body and a forming plate mounted on a radial outer surface of the main body.

The forming plate is integrally mounted to a radial outer surface of the main body by welding. A plurality of peaks are formed at a surface of the forming plate, in which the peaks are corresponding with a shape of the anti-slip groove to be formed on roadway.

According to a second aspect of the present invention, the present invention provides an apparatus of forming an anti-slip groove on roadway by using the non-cutting technology, the apparatus comprising:

a drum-shaped pressurizing rotator being mounted to a lower portion of a vehicle and being supported by a supporting arm vertically extending from a main body of the vehicle, and the pressurizing rotator including a drum-shaped main body.

A plurality of peaks are formed at a radial outer surface of the main body, in which the peaks are corresponding with a shape of the anti-slip groove to be formed on roadway.

According to a third aspect of the present invention, the present invention provides a method of forming an anti-slip groove on roadway by using the non-cutting technology, the method comprising the steps of:

forming the anti-slip groove on roadway by using a grooving equipment of which a drum-shaped pressurizing rotator having a drum-shaped main body is mounted to a lower portion of the grooving equipment, in which the anti-slip groove is pressed out by the drum-shaped pressurizing rotator, wherein the depth of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 80 mm, the width of the bottom surface of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 200 mm, the width of the upper surface of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 200 mm, the angle of gradient of the anti-slip groove will range from 1:0.2 to 1:1.2, and the distance between the anti-slip grooves will range from a minimum of about 10 mm to a maximum of about 1,000 mm.

According to a fourth aspect of the present invention, the present invention provides a method of forming an anti-slip groove on roadway by using the non-cutting technology, the method comprising the steps of:

forming the anti-slip groove on roadway by using a grooving equipment of which a drum-shaped pressurizing rotator having a drum-shaped main body is mounted to a lower portion of the grooving equipment, in which the anti-slip groove is pressed out by the drum-shaped pressurizing rotator, wherein the depth of the anti-slip groove will range from a minimum of about 10 mm to a maximum of about 40 mm, the width of the bottom surface of the anti-slip groove will range from a minimum of about 10 mm to a maximum of about 35 mm, the width of the upper surface of the anti-slip groove will range from a minimum of about 14 mm to a maximum of about 131 mm, the angle of gradient of the anti-slip groove will range from 1:0.2 to 1:1.2, and the distance between the anti-slip grooves will range from a minimum of about 15 mm to a maximum of about 50 mm.

According to a fifth aspect of the present invention, the present invention provides a method of forming an anti-slip groove on roadway by using the non-cutting technology, the method comprising the steps of:

forming the anti-slip groove on roadway by using a grooving equipment of which a drum-shaped pressurizing rotator having a drum-shaped main body is mounted to a lower portion of the grooving equipment, in which the anti-slip groove is pressed out by the drum-shaped pressurizing rotator, wherein the depth of the anti-slip groove will range from a minimum of about 5 mm to a maximum of about 10 mm, the width of the bottom surface of the anti-slip groove will range from a minimum of about 40 mm to a maximum of about 90 mm, the width of the upper surface of the anti-slip groove will range from a minimum of about 56 mm to a maximum of about 306 mm, the angle of gradient of the anti-slip groove will range from 1:0.2 to 1:1.2, and the distance between the anti-slip grooves will range from a minimum of about 40 cm to a maximum of about 3 m.

A hardening agent or a slag can be applied to the cut surface of the anti-slip groove according to the needs.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an external perspective view of an apparatus of forming an anti-slip groove on the roadway by using the non-cutting technology according to a preferred embodiment of the present invention;

FIG. 2 is a bottom perspective view of the apparatus of forming the anti-slip groove on the roadway by using the non-cutting technology as illustrated in FIG. 1;

FIG. 3 shows a drum-shaped pressurizing rotator to be used for forming the anti-slip groove on the roadway by using the non-cutting technology according to the preferred embodiment of the present invention;

FIG. 4 shows front and side views of the drum-shaped pressurizing rotator as shown in FIG. 3; and

FIG. 5 shows a conventional apparatus of forming an anti-slip groove on the roadway according to the prior art.

As described above, the apparatus and the method according to the present invention make possible to form the anti-slip groove on the roadway by only pressing the paved surface of the road without pre-heating the paved surface of the road, which make possible to improve the durability of the anti-slip groove and to minimize the damage to the paved surface of the road and thereby resulting in great reduction of maintenance costs. Furthermore, the apparatus and the method according to the present invention make possible to form the anti-slip groove on the roadway by only pressing the paved surface of the road without pre-heating the paved surface of the road, which are economically feasible and make possible to increase work efficiency due to the relatively simple structure. Furthermore, the apparatus and the method according to the present invention can fundamentally prevent noise or dust from being generated while forming the non-slip groove.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The drawings in the present application and their accompanying detailed description are directed to merely example embodiments of the invention. To maintain brevity, other embodiments of the invention which use the principles of the present invention are not specifically described in the present application and are not specifically illustrated by the present drawings. It should be borne in mind that, unless noted otherwise, like or corresponding elements among the figures may be indicated by like or corresponding reference numerals.

Hereinafter, an apparatus and a method of forming an anti-slip groove on roadway by using the non-cutting technology in accordance with a preferred embodiment according to the present invention will be explained in detail.

The key feature of the present invention is to form an anti-slip groove in such a way to take the anti-slip groove to press the surface of the road at predetermined slope and depth instead of the more traditional method, without cutting the surface of the road. To this end, according to the present invention, the non-cutting structure for the grooving equipment may be used.

FIGS. 1 and 2 show the apparatus of forming an anti-slip groove on roadway by using the non-cutting technology in accordance with the preferred embodiment according to the present invention.

Referring to FIGS. 1 and 2, the apparatus of forming an anti-slip groove on roadway by using the non-cutting technology in accordance with a preferred embodiment, generally designated as 100, is an improvement to a special vehicle generally used for road paving, which has an improved lower structure. For example, the apparatus (100) may employ an equipment that is used for road paving, such as combination rollers. The apparatus (100) comprises a drum-shaped pressurizing rotator (130) that is mounted to a lower portion of the special vehicle. More particularly, the drum-shaped pressurizing rotator (130) may be mounted to front and rear lower portions of the special vehicle and it is supported by a supporting arm (120) vertically extending from a main body (112) of the vehicle. In detail, an upper end of the supporting arm (120) is fixed and mounted to the main body (112) and a lower end of the supporting arm (120) is coupled with a side surface of the drum-shaped pressurizing rotator (130).

FIGS. 3 and 4 show the drum-shaped pressurizing rotator (130) to be mounted to the lower portion of the apparatus of forming an anti-slip groove on roadway by using the non-cutting technology.

As shown in FIGS. 3 and 4, the pressurizing rotator (130) includes a drum-shaped main body (131) and a forming plate (132) mounted on a radial outer surface of the main body (131). Preferably, the forming plate (132) is integrally mounted to a radial outer surface of the main body (131) by welding. The axis of rotation (133) is disposed within the main body (131) along the longitudinal direction thereof in which both ends of the axis of rotation (133) project from both side surfaces of the main body (131) in lateral direction and are rotatably engaged with an inner surface of the supporting arm (120). A plurality of bearings (not shown) may be disposed between both ends of the axis of rotation (133) and an inner surface of the supporting arm (120) in order to support a smooth rotation of the axis of rotation (133).

A plurality of peaks (135) are formed on a surface of the forming plate (132), in which the peaks (135) are corresponding with a shape of the anti-slip groove to be formed on roadway. A gap between the peaks (135) is in the range of 10 mm to 200 mm, and a depth of the peaks (135) is in the range of 2 mm to 15 mm. The shape of peaks (135) can be changed in accordance with the shape of anti-slip groove to be formed on the surface of the road. Although the present invention is described with respect to a specific embodiment of which the forming plate (132) is integrally mounted to the radial outer surface of the main body (131), it will be understood by those skilled in the art that a plurality of peaks can be directly formed on a radial outer surface of the main body (131) without employing the forming plate (132).

Meanwhile, a vibration device (not illustrated) may be disposed within an engine room of the main body (112). The vibration device may provide the pressurizing rotator (130) with the vibration effect at the time that the pressuring rotator (130) descends and continuously it begins to be rotated in order to form an anti-slip groove by applying a pressurized force to the surface of the road, and thereby resulting in the smooth formation of the anti-slip groove. The vibration force generated from the vibration device can be transferred to the pressurizing rotator (130) by means of a vibration force transferring means disposed along an inner side of the supporting arm (120).

Herein below, a method of forming an anti-slip groove on roadway by using the non-cutting technology will be explained in detail.

Unlike traditional ways, in order to form an anti-slip groove at predetermined slanting angle and depth without cutting the paved surface of the road, the present invention employs the non-cutting grooving apparatus (100) as shown in FIGS. 1 and 2.

More specifically, at first, the step of curing the paved surface of the road on which the anti-slip groove is formed may be performed. According to the present invention, without performing the preheating of the paved surface, the anti-slip groove can be formed by pressing the paved surface of the road with the grooving apparatus. That is, while performing the step of curing or after performing the step of curing, by using a crane, the grooving apparatus is positioned at a desired site on the road at which the anti-slip groove will be formed. Then the pressuring rotator (130) on which the forming plate (132) having a shape conforming to the shape of the anti-slip groove is mounted moves towards the site, and it descends and continuously begins to be rotated in order to form an anti-slip groove by applying a pressurized force to the surface of the road, and thereby resulting in the formation of the anti-slip groove.

After the completion of forming the anti-slip groove, a primer can be applied onto the paved surface and the anti-slip groove according to the need. A certain type of paint having a good adhesive property to the paved surface of the road may be selected as the primer. This primer may be uniformly coated onto the paved surface and the anti-slip groove.

Furthermore, a pigment can be applied onto the primer according to the need. The color of the pigment may be changed in response to the temperature difference between day and night and the temperature change of the paved surface of the road when the road is frozen in the winter. This can function to inform the condition of the surface of the road due to weather conditions to a driver of the vehicle.

Furthermore, paints for lane can be filled in the anti-slip groove according to the need. The paints can function to notify the existence of the anti-slip groove to a driver of the vehicle so that the driver of the vehicle will be able to make safe driving.

In a preferred embodiment example, an anti-slip groove may be formed at predetermined depth, preferably, a depth of about 1˜80 mm on the paved surface of the road by using the non-cutting grooving apparatus (100) according to the present invention. At this time, it is preferred that the width of the bottom surface of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 200 mm. Also, it is preferred that the width of the upper surface of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 200 mm. Also, it is preferred that the slope of the anti-slip groove, that is, the angle of gradient will range from 1:0.2 to 1:1.2. Also, it is preferred that the distance between the anti-slip grooves will range from a minimum of about 10 mm to a maximum of about 1,000 mm. The anti-slip groove may be formed by pressing the paved surface of the road with the pressurizing rotator (130) at predetermined slope and depth as described above, thereby resulting in the formation of substantially V-shaped groove.

At this time, a groove boundary between the anti-slip groove and the surface of the road may be formed to be chamfered or curved in an arc shape.

Meanwhile, according to the need, it is able to reinforce the anti-slip groove by applying a hardening agent, for example the epoxy resin, on a slanted surface within the anti-slip groove at a predetermined thickness. Also, it is able to increase the frictional force by spraying a slag into the anti-slip groove.

In another preferred embodiment example, an anti-slip groove having an improved drain function may be formed at predetermined depth, preferably, a depth of about 10˜40 mm on the paved surface of the road by using the non-cutting grooving apparatus (100) according to the present invention. At this time, it is preferred that the width of the bottom surface of the anti-slip groove will range from a minimum of about 10 mm to a maximum of about 35 mm. Also, it is preferred that the width of the upper surface of the anti-slip groove will range from a minimum of about 14 mm to a maximum of about 131 mm. Also, it is preferred that the slope of the anti-slip groove, that is, the angle of gradient will range from 1:0.2 to 1:1.2. Also, it is preferred that the distance between the anti-slip grooves will range from a minimum of about 15 mm to a maximum of about 50 mm.

In other preferred embodiment example, an anti-slip groove having an improved function of warning to reduce the vehicle speed may be formed at predetermined depth, preferably, a depth of about 5˜10 mm on the paved surface of the road by using the non-cutting grooving apparatus (100) according to the present invention. At this time, it is preferred that the width of the bottom surface of the anti-slip groove will range from a minimum of about 40 mm to a maximum of about 90 mm. Also, it is preferred that the width of the upper surface of the anti-slip groove will range from a minimum of about 56 mm to a maximum of about 306 mm. Also, it is preferred that the slope of the anti-slip groove, that is, the angle of gradient will range from 1:0.2 to 1:1.2. Also, it is preferred that the distance between the anti-slip grooves will range from a minimum of about 40 cm to a maximum of about 3 m.

As described above, according to the apparatus and the method of forming an anti-slip groove on roadway, it is convenient for work due to the use of non-cutting technique and this leads to an excellent work efficiency. In addition, the surface friction coefficient and the skid resistance may be improved. Even if a driver put on the breaker of the vehicle suddenly, the tire's traction may be increased. This leads to the improvement of the straight traveling stability of the vehicle. Further, the driver can see the non-slip groove even better. Since the area in which the wheels of vehicle are in contact with the ground is larger and the frictional force there between is increased, the braking distance of the vehicle may be significantly reduced. Even if the distance between the anti-slip grooves is set to be relatively wide, it is able to maintain the same braking distance. Also, it can provide effects of preventing the driving while drowsy and of warning to reduce the vehicle speed due to the sound and the vibration transferred from the tire on the trips of the vehicle. Furthermore, it is possible to shorten the braking distance of the vehicle on wet roads in case of rain.

Although the invention is described with respect to specific embodiments, the principles of the invention, as defined by the claims appended herein, can obviously be applied beyond the specifically described embodiments of the invention described herein. Moreover, in the description of the present invention, certain details have been left out in order to not obscure the inventive aspects of the invention. The details left out are within the knowledge of a person of ordinary skill in the art. 

1. An apparatus of forming an anti-slip groove on roadway by using the non-cutting technology, the apparatus comprising: a drum-shaped pressurizing rotator being mounted to a lower portion of a vehicle and being supported by a supporting arm vertically extending from a main body of the vehicle, and the pressurizing rotator including a drum-shaped main body and a forming plate mounted on a radial outer surface of the main body.
 2. The apparatus as claimed in claim
 1. wherein the forming plate is integrally mounted to a radial outer surface of the main body by welding.
 3. The apparatus as claimed in claim 1, wherein the axis of rotation is disposed within the main body along the longitudinal direction thereof, in which both ends of the axis of rotation project from both side surfaces of the main body in lateral direction and are rotatably engaged with an inner surface of the supporting arm.
 4. The apparatus as claimed in claim 3, wherein a plurality of peaks are formed at a surface of the forming plate, in which the peaks are corresponding with a shape of the anti-slip groove to be formed on roadway, a gap between the peaks is in the range of 10 mm to 200 mm, and a depth of the peaks is in the range of 2 mm to 15 mm.
 5. Apparatus of forming an anti-slip groove on roadway by using the non-cutting technology, the apparatus comprising: a drum-shaped pressurizing rotator being mounted to a lower portion of a vehicle and being supported by a supporting arm vertically extending from a main body of the vehicle, and the pressurizing rotator including a drum-shaped main body.
 6. The apparatus as claimed in claim 5, wherein the axis of rotation is disposed within the main body along the longitudinal direction thereof, in which both ends of the axis of rotation project from both side surfaces of the main body in lateral direction and are rotatably engaged with an inner surface of the supporting arm.
 7. The apparatus as claimed in claim 5, wherein a plurality of peaks are formed at a radial outer surface of the main body, in which the peaks are corresponding with a shape of the anti-slip groove to be formed on roadway, a gap between the peaks is in the range of 10 mm to 200 mm, and a depth of the peaks is in the range of 2 mm to 15 mm.
 8. A method of forming an anti-slip groove on roadway by using the non-cutting technology, the method comprising the steps of: forming the anti-slip groove on roadway by using a grooving equipment of which a drum-shaped pressurizing rotator having a drum-shaped main body is mounted to a lower portion of the grooving equipment, in which the anti-slip groove is pressed out by the drum-shaped pressurizing rotator, wherein the depth of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 80 mm, the width of the bottom surface of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 200 mm, the width of the upper surface of the anti-slip groove will range from a minimum of about 1 mm to a maximum of about 200 mm, the angle of gradient of the anti-slip groove will range from 1:0.2 to 1:1.2, and the distance between the anti-slip grooves will range from a minimum of about 10 mm to a maximum of about 1,000 mm.
 9. A method of forming an anti-slip groove on roadway by using the non-cutting technology, the method comprising the steps of: forming the anti-slip groove on roadway by using a grooving equipment of which a drum-shaped pressurizing rotator having a drum-shaped main body is mounted to a lower portion of the grooving equipment, in which the anti-slip groove is pressed out by the drum-shaped pressurizing rotator, wherein the depth of the anti-slip groove will range from a minimum of about 10 mm to a maximum of about 40 mm, the width of the bottom surface of the anti-slip groove will range from a minimum of about 10 mm to a maximum of about 35 mm, the width of the upper surface of the anti-slip groove will range from a minimum of about 14 mm to a maximum of about 131 mm, the angle of gradient of the anti-slip groove will range from 1:0.2 to 1:1.2, and the distance between the anti-slip grooves will range from a minimum of about 15 mm to a maximum of about 50 mm.
 10. A method of forming an anti-slip groove on roadway by using the non-cutting technology, the method comprising the steps of: forming the anti-slip groove on roadway by using a grooving equipment of which a drum-shaped pressurizing rotator having a drum-shaped main body is mounted to a lower portion of the grooving equipment, in which the anti-slip groove is pressed out by the drum-shaped pressurizing rotator, wherein the depth of the anti-slip groove will range from a minimum of about 5 mm to a maximum of about 10 mm, the width of the bottom surface of the anti-slip groove will range from a minimum of about 40 mm to a maximum of about 90 mm, the width of the upper surface of the anti-slip groove will range from a minimum of about 56 mm to a maximum of about 306 mm, the angle of gradient of the anti-slip groove will range from 1:0.2 to 1:1.2, and the distance between the anti-slip grooves will range from a minimum of about 40 cm to a maximum of about 3 m.
 11. The method as claimed in claim 8, wherein a forming plate is mounted on a radial outer surface of the main body by welding, in which a plurality of peaks are formed on a surface of the forming plate, the peaks being corresponding with a shape of the anti-slip groove to be formed on roadway.
 12. The method as claimed in claim 8, wherein a plurality of peaks are directly formed on a radial outer surface of the main body, the peaks being corresponding with a shape of the anti-slip groove to be formed on roadway.
 13. The method as claimed in claim 8, wherein a hardening agent is applied to the cut surface of the anti-slip groove.
 14. The method as claimed in claim 8, wherein a slag is applied to the cut surface of the anti-slip groove. 